Toyota Prado/Colarado 90 w/ early 1KD EGR Blank and Butterfly Removal

[cjkbarnett]

Hey all,

I have a 90 series with the early 1KD engine (year 2000), and I'm wondering if anyone has removed the the throttle body plate?

Reason for me wanting to do this, is that since the egr has been blanked off and i installed a better flowing 3" exhaust system, the turbo now boosts much higher, and I can now happily achieve up to 18-19 psi of boost, with the help of a bleed valve to trick the MAP sensor to avoid the fuel cut.

As a result, I lift off the accelerator, and the excess boost has no where to go, resulting in a "CHOOOoooo" noise from the surge when the throttle body plate (I assume) snaps shut. I've attached a video to show it, although it's much louder in real life.

Normally the egr would dump the extra air (from my understanding). If I was to remove the throttle plate / butterfly or whatever its called, from the intake, would this allow the engine to absorb the extra pressure instead?
Anyone done anything like this before?
I guessing something sort of dump valve pre-throttle body plate would also achieve the same thing, with more work.

I can't seem to find too much information on these early 1KD engines.

Cheers, Cameron

 

[Shayne]

Don't know about the 1kd but when I removed the butterfly from my 1kz it was simply a case of removing two very small screws fixing it to the bar it pivots on . I could have replaced it just as easily .

I would like to see that bleed valve trick because I will one day get around to blanking the egr in my mrs 1kd .

 

[cjkbarnett]

Don't know about the 1kd but when I removed the butterfly from my 1kz it was simply a case of removing two very small screws fixing it to the bar it pivots on . I could have replaced it just as easily .

I would like to see that bleed valve trick because I will one day get around to blanking the egr in my mrs 1kd .

The bleed valve is just a basic pneumatic "fuel cut defender" lol. It's just bleeding the excess pressure to the map sensor, I can grab some of photos of the egr blank and the fuel cut defender tomorrow for you.

The blanks were just made by cutting the ends off the egr cooler pipe, and welding a frost plug in. Worked quite well.

Just got a some heater hose to bypass the cooler part, and squeezed a big ball bearing in the line to force the water to go through the block instead of the now bypassed egr cooler hose.

Might pop the intercooler off over the weekend and see if I can remove the throttle body plate off as easily as the 1kz. Will post back with some photos when I get the chance, to help any other people who come to across this thread.

 

[cjkbarnett]

So, I did it! Removed the throttle plate this morning, and wow, what a difference!

Vehicle now feels "lighter", like it doesn't need as much throttle to get up and go. Turbo boosts much smoother now, and feels more responsive as a whole. It also rolls nicer (I assume less engine braking).

Throttle body and plate:

I could not remove the screws as they are a very soft metal, so ended up putting the drill through them untill I could wiggle the plate out. I just used a 10mm spanner on the nut on the right to wedge the plate in the closed position, as it normaly rests flat

Only cons I have found with this, are that it now shuts down like an older diesel, nice and lumpy. It doesn't bother me though, and that's to be expected, as the plate used to snap shut to starve the engine of air when you turned the key off.

Other downside is less engine braking power, but again, I'm not fussed. I live in a very flat area, and my brakes are in top condition.

Now some bonus photos of the egr block:
This is the blank that was made, it's just the old egr, end cut off and a frost plug welded in. Works a charm, and the block side of it is the same.

Bypass hose:

Not a great photo, but the hose has a big ball bering wedged in there to force the water through the block instead of bypassing it.

Extra: Fuel cut defender
This is installed as I am running a larger exhaust, and combined with the egr blank, the turbo sometimes likes to push a bit above the 17.5psi the ecu is happy with. This just bleeds off some extra pressure so the MAP sensor can't see it, so no fuel cut

Hopefully this info is useful for someone in the future!

Cheers, Cam

 

[FordPrefect1690]

So, I did it! Removed the throttle plate this morning, and wow, what a difference!

Congratulations. You are now contributing to the overall detriment of human health. By remove the throttle butterfly vane (and all the other devices you've defeated) you are causing your engine to emit several times the permitted amounts of oxides of nitrogen (NO, N2O, ect). These gases have been proven to have negative affects on human lifespan. They are also one of the main contributors to city smogs, and acid rain. The reason the air quality in major cities in most of the world has improved over the last 15 years is because governments are forcing car makers to produce engines that emit less of the harmful chemical gases.

Then we get to clowns like you.... Who think the rules don't apply to you and you should be free to pollute anywhere and everywhere as you like. Well, I'm sick of people who think their petty needs are greater than the rest of the world, and who think they can emit all these chemicals and proudly boast about it like it's a badge of honour.

I'd really like you to think about what your modification is doing to your children's health, and your grandchildren's. What I'd really prefer is that people who think like you do, not to breed!

Please don't get me wrong, I am not in any way a 'virtue signalling environmentalist', true environmentalists don't behaviour like they do. We ask people to consider the damage they do as a result of modifications like this, and then don't do them.

Please, for the health of everybody, don't do this! If you want an engine that doesn't have all these devices, buy a petrol engine.

Chris...........
(bring it!)

 

[cjkbarnett]

Congratulations. You are now contributing to the overall detriment of human health. By remove the throttle butterfly vane you are causing your engine to emit several times the permitted amounts of oxides of nitrogen (NO, N2O, ect). These gases have been proven to have negative affects on human lifespan. They are also one of the main contributors to city smogs, and acid rain. The reason the air quality in major cities in most of the world has improved over the last 15 years is because governments are forcing car makers to produce engines that emit less of the harmful chemical gases.

Then we get to clowns like you.... Who think the rules don't apply to you and you should be free to pollute anywhere and everywhere as you like. Well, I'm sick of people who think their petty needs are greater than the rest of the world, and who think they can emit all these chemicals and proudly boast about it like it's a badge of honour.

I'd really like you to think about what your modification is doing to your children's health, and your grandchildren's. What I'd really prefer it that people who think like you do, not to breed!

Please don't get me wrong, I am not in any way a 'virtue signalling environmentalist', true environmentalists don't behaviour like they do. We ask people to consider the damage they do as a result of modifications like this, and then don't do them.

Please, for the health of everybody, don't do this! If you want an engine that doesn't have all these devices, buy a petrol engine.

Chris...........
(bring it!)

Chill out dude, it's a 24 year old diesel vehicle, and funnily enough it no longer smokes its ass off under load, runs cleaner and more efficiently now with the gunked up emissions components removed.

Oh, and FYI, the throttle plate (technically an anti shudder plate/valve in a diesel - ASV) only cuts air to the engine to shut it down with out a shake. It does nothing for emissions, apart from create a slight vacuum to draw EGR (which blocked up and failed long ago - 24 year old vehicle, remember )

Only clown here is you, unfortunately

*Edit*
Wow, never mind, it's just a nobody who made a fresh account just to have a rant.

 

[FordPrefect1690]

I'm referring to all the other things you removed, especially the EGR. Do you actually know why the EGR is there? If you did, you wouldn't block it off. Only people who have no regard for their fellow citizens do selfish things like this. I don't care if it's a 24 year old engine, it was designed with the emission control devices for a reason, and there isn't a single good reason to defeat or remove them. As I said, we have cleaner air to breath now because these devices were installed.

You may THINK the engine is running cleaner, but it's not. The dangerous gases being emitted are colourless. Challenge for you. Take your car to a licensing centre of have the exhaust output checked. The results may shock you.

And yes, I did create this account just to let you know what you've done.

And I stand by my comment, you are a clown, but after reading your reply, I now add that you are a selfish clown.

 

[cjkbarnett]

I'm referring to all the other things you removed, especially the EGR. Do you actually know why the EGR is there? If you did, you wouldn't block it off. Only people who have no regard for their fellow citizens do selfish things like this. I don't care if it's a 24 year old engine, it was designed with the emission control devices for a reason, and there isn't a single good reason to defeat or remove them. As I said, we have cleaner air to breath now because these devices were installed.

You may THINK the engine is running cleaner, but it's not. The dangerous gases being emitted are colourless. Challenge for you. Take your car to a licensing centre of have the exhaust output checked. The results may shock you.

And yes, I did create this account just to let you know what you've done.

And I stand by my comment, you are a clown, but after reading your reply, I now add that you are a selfish clown.

Are you going to go moan everywhere else on the internet today too? Somebody got a little bit triggered lol

 

[FordPrefect1690]

Are you going to go moan everywhere else on the internet today too? Somebody got a little bit triggered lol

Yes, I got triggered by a selfish clown who has no regard for anyone else.

 

[cjkbarnett]

Could we please have a mod clean this thread up and remove Mr triggered lol

@Crispin

Cheers

 

[FordPrefect1690]

Could we please have a mod clean this thread up and remove Mr triggered lol

I'd prefer the whole thread is removed, so others don't get the same selfish idea as you.

 

[Shayne]

The EGR was adopted wholesale by the motor industry as a tree huggers own goal , ticks all the save the planet boxes for 3 years while the car is new and under warranty and from then on hurts fuel efficiency and vehicle reliability bringing forward the need for a new car .

If you had wealthy and generous parents you could afford virtue signalling by scrapping 3 or 4 cars in 24 years and not a word will be said about the coal used to melt them down and build 3 or 4 new ones or the greatly multiplied environmental harm caused by short shortsightedness .

 

[FordPrefect1690]

The EGR was adopted wholesale by the motor industry as a tree huggers own goal , ticks all the save the planet boxes for 3 years while the car is new and under warranty and from then on hurts fuel efficiency and vehicle reliability bringing forward the need for a new car .

You very clear don't understand anything about NOx and the roles the EGR plays in reducing those gases to 'acceptable' levels. If CORRECTLY maintained, an engine with an EGR can be more fuel efficient and less polluting than without. All you have done is remove a part of the system YOU think is causing problems, at the expense of human health. Just go and look up what high levels of oxides of nitrogen do to humans.

If you want the engine to 'be as good as it was when new', then maintain the b...y thing! It's not that hard, and you'll not end up as a selfish clown who thinks he knows better than thousands of automotive engineers (who design engines) and medical professionals (who look after YOUR health, and the health of YOUR children).

Now, go and remove all the defeats and deletes you've implemented so people can live normal healthy lives.

Chris.......

 

[cjkbarnett]

My goodness, you're the type of person to go to the beach and complain about the sand. Remind me why were you here again? Aside from moaning about the removal of a defunct emissions feature from a vehicle who's age seems to be higher than your IQ...

Utterly pathetic

 

[FordPrefect1690]

My goodness, you're the type of person to go to the beach and complain about the sand. Remind me why were you here again? Aside from moaning about the removal of a defunct emissions feature from a vehicle who's age seems to be higher than your IQ...

Utterly pathetic

You can't argue with me on my statement of facts and reasoning, so you're down to personal insults.

When you have a logical reason, that doesn't rely on 'because I think it's a good idea' come back and put your case. I've put mine, where's yours?

Those emissions control devices on your car are not defunct. Those devices do not carry a 'remove when the car is 20+ years old' sticker. As long as the vehicle is registered for road use, then all the system that were on it when the car was new must remain on it, and functional.

Please explain to me why your engine now putting out around 10 times the permitted limit of NOx (at the time it was manufactured) is a good thing?

You signed off as 'utterly pathetic'. I'd say that's better than my description of you as a 'selfish clown'. You are, utterly pathetic, and selfish. Your demonstration that you have no idea of what you are defeating/deleted is very obvious. And this is why you shouldn't be doing it.

Chris.....

 

[cjkbarnett]

You can't argue with me on my statement of facts and reasoning, so you're down to personal insults.

When you have a logical reason, that doesn't rely on 'because I think it's a good idea' come back and put your case. I've put mine, where's yours?

Those emissions control devices on your car are not defunct. Those devices do not carry a 'remove when the car is 20+ years old' sticker. As long as the vehicle is registered for road use, then all the system that were on it when the car was new must remain on it, and functional.

Please explain to me why your engine now putting out around 10 times the permitted limit of NOx (at the time it was manufactured) is a good thing?

You signed off as 'utterly pathetic'. I'd say that's better than my description of you as a 'selfish clown'. You are, utterly pathetic, and selfish. Your demonstration that you have no idea of what you are defeating/deleted is very obvious. And this is why you shouldn't be doing it.

Chris.....

 

[Ben Stratford]

You can't argue with me on my statement of facts

Please explain to me why your engine now putting out around 10 times the permitted limit of NOx (at the time it was manufactured) is a good thing?

Would you mind telling us how you know this gentleman’s car is emitting 10 times the permitted limit? Have you measured his car?

 

[Shayne]

I don't need to worry about my health as its a scientifically proven fact that anybody who ever seen a lit cigarette died just moments later .

Hence as a heavy smoker for 40 years I'm surely a ghost and immortal . The planet will be fine , it is after all more resilient than dinosaurs so the extinction of monkeys is not going to hurt it .

 

[Crispin]

Could we please have a mod clean this thread up and remove Mr triggered lol

@Crispin

Cheers

It would be best if we refrained from inflaming or making it personal.

Modifications to engines and the rules surrounding those differ by region so it's not something we could form a view on.

Many members do many modifications for use on private property.


Please let's keep it civil though

 

[Brecht]

Is the butterfly cap not an emergency function for a diesel runaway?